Fig. 2From: Linkage of Australian national registry data using a statistical linkage keyBar chart showing match rate of different strategies. Strategy 1: ‘gold standard’ using all data available including identified data, plus admission/procedure date. Strategy 2: deidentified data only, plus admission/procedure date. Strategy 3: SLK-581 plus admission/procedure date. Strategy 4: as for strategy 2, plus SLK-581Back to article page